linux-kernel - Re: [PATCH 4/4] x86: Ignore stack unwinding in KCOV

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 4 Jun 2024 17:06:41 +0200
From: Alexander Potapenko <glider@...gle.com>
To: Dmitry Vyukov <dvyukov@...gle.com>
Cc: tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, 
	dave.hansen@...ux.intel.com, x86@...nel.org, linux-kernel@...r.kernel.org, 
	syzkaller@...glegroups.com, elver@...gle.com, nogikh@...gle.com, 
	tarasmadan@...gle.com
Subject: Re: [PATCH 4/4] x86: Ignore stack unwinding in KCOV

On Tue, Jun 4, 2024 at 3:45 PM 'Dmitry Vyukov' via syzkaller
<syzkaller@...glegroups.com> wrote:
>
> Stack unwinding produces large amounts of uninteresting coverage.
> It's called from KASAN kmalloc/kfree hooks, fault injection, etc.
> It's not particularly useful and is not a function of system call args.
> Ignore that code.
>
> Signed-off-by: Dmitry Vyukov <dvyukov@...gle.com>
> Cc: x86@...nel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: syzkaller@...glegroups.com
Reviewed-by: Alexander Potapenko <glider@...gle.com>